Add a firewall exception

Disable SELinux deprecated since v.5.0

Open the /etc/selinux/config file using any text editor, replace the SELINUX=enforcing or SELINUX=permissive string with the SELINUX=disabled one and save the changes.

Reboot your server for the changes to take effect.

When all this is done, you can enter http://localhost in your browser address bar to open the Document Server welcome page where you will find further instructions on how to enable document examples or integrate online editors into your web application using the provided API.